Types of Leprosy


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bacteria.jpg

The bacteria that causes leprosy, as seen above.


Due to the various symptoms of leprosy different classifications have been made. According to WHO( Worldwide Health Organization), leprosy can be categorized into two forms: tuberculoid and lepromatous. Other classifications though such as the Ripley and Joplin Classification identify five forms of leprosy: tuberculoid, borderline tuberculoid, borderline, borderline lepromatous, and lepromatous leprosy.





Worldwide Health Organization's (WHO) Classification of Leprosy





Paucibacillary (PB)



Multibacillary (MB)
Previously called



Tuberculoid Leprosy



Lepromatous Leprosy




Unique Signs and Symptoms



Significantly milder with skin lesions and peripheral nerve enlargement as the only usual signs, possibility of spontaneous recovery



Lion-like face due to inflammation (leonine facies), as well as nasal cartilage damage causing saddle-nose deformity, blindness due to scarring of the eye can result, infertility may result in men



Distribution of lesions



Asymmetrical



Symmetrical




Occurs When



Infected person is able to mount a robust, cell-mediated immune response to the bacterium



Infected person unable to mount a cell-mediated immune response to the bacterium



Defined by World Health Organization as



1-5 patches associated with leprosy



>5 patches associated with leprosy




Is the person Infectious?





No



Possibly; bacterium is found in high concentrations in respiratory secretions and organs, but it is not clear how it is spread to another person




Prospects for Recovery





Good



Cure from disease possible, however, underlying disease complications (such as limb damage due to infection) may not be reversible or require reconstructive surgery


http://www.stanford.edu/class/humbio103/ParaSites2006/Leprosy/snsx.htm



Ridley and Joplin's Classification of Leprosy

According to other scientists or organizations, there are more than two types of leprosy. The Ridley-Joplin chart lists five subcategories of leprosy, ranging from one which mirrors tuberculosis all the way to acute leprosy.

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Leprosy Index:

- Leprosy - A Brief History
- Types of Leprosy
- Leprosy-Symptoms

- Leprosy - Myths vs. Facts
- Leprosy - A Cure?
- Leprosy - Works Cited